It's MTV's second annual Musical March Madness! MTV News took the 64 biggest names in rock, split them up into four regions, assigned them seeds and puts them up against one another in a single-elimination series of match-ups in a winner-take-all contest. We're leaving it to you to decide an actual champ in this field of 64, so over the next few weeks, fan voting will determine who will emerge as this year's champion. It's all about the fans, and the artist with the most passionate fan base will score the awesome Musical March Madness trophy!

It's the final pairing of the second round in the Midwest bracket, which features two awesomely loud (but quite different) artists going at it for the right to move on to the Sweet 16. The West bracket will get rolling on Wednesday (March 23).

The Black Keys overcame Bret Michaels in a relatively bloodless affair (the Poison frontman never had a chance against the indie darlings), while Avenged Sevenfold had to overcome a surprisingly strong surge from Taylor Swift to advance. The A7X posse seems rugged enough to push their way into the next round, but will they have enough to overcome the Keys? Only you know for sure!